Process and apparatus for making finger rings



July 12, 1927.

c. w. ALLSOPP PROCESS AND APPARATUS FOR MAKING FINGER RINGS INVENTOR Filed Jam's. 192s Patented July 12,1927.

" purr- CLIFFORD W.' A Lsorr, or NEWARK, new E SEY.

' ima e 1 I PROCESS AND ArrARATUs FORMAKING FINGER RINGS.

This invention relates to the manufacture of finger rings or engraved bands of like nature, the invention including a novel process as well as an'apparat-us for performing portions of the same. e V

One of the features of the invention is in the provision of meansforproducing rings which are alike and of uniform weight regardless of finger size. i w

Another object is to providen eans by which a definite design can. be uniformly produced at a far less expense than can be don-e by hand chasing,

A further aim 18 n the production of rings of unusual durability, including the chased design, due to condensing and hardening ofthe metal during the process of ring construction.

These and'other valuable features, such as reduction in cost of manufacture, speed of production and superior excellence of product, are accomplished by the novel methods and mechanism hereinafter described and illustrated in the accoi'npanying drawing, forming an important part of this disclosure, and in which V Figure 1 is a partial vertical sectional view of an embodiment of the ring rolling apparatus. f

Figure 2 is a transversesectional view of the same.

Figure 3 isla plan view of a plain ring of substantially cylindrical cross section.

Figure 4 is a like view of an engraved of lar er diameter made from another blank struck between dies which give them'ap proximately the shape they will eventually have and bring them to a uniform thickness, after which they are skimmed clean on the inside and outside, ready for rolling which will be further on described- After rolling, the rings may be stamped flies]- front elevational,

Application filed January 6, 1925. Serialno. 775.

on theirinsi de, as with the karatinark, trade? mark, et cetera, rounded up, strlpped, the design touched up byhand, again skimmed,

millgrained onlth'e edges and finished by butting and polishing, preparatory foij the market.

Referring now to'the drawing, the numeral 10 designates the base of a rigid frame hav ing right and left sides, respectively 11 and 12, and an integral front 'wall 18 on which ward fromq-the base 10,1116 samelbeingrin -is a cylindrical boss 14 extending' inward i from the wall 13 and also outward beyond vthe edge of the base 10.

A pair of transverse bosses 15 extend u'p I register with an outstanding .lug 16 on the, a 2

side wall 11, these bossesand lugsbeing bored to receive a shaft 17, to' the outerex tending end of which is rigidlvattached a hand lever 18 provided ,with a detent 19, the point of which is 'engageable injone of a series of notches 20 formed ina sector '21 secured to the foundation of the machine.

Between the bosses .15, theshaft 17 has formed onit an eccentric 22 rotatable ina sleeve 28 from .which extend upwardly a l pair of arms 24, each containing circular open1ngs'25 and havlng at then upper ends int'urned bosses 26 carryinga pin 27 on whichis pivotally mounted a link 28 ihis linkis bifurcated atitsoppositeend and engaged in the fork thereof, by thepin 29, is a rib 30 extending centrally down from a table31 having-down-turned right angled platelflanges 32 fitted to slide vertically between the sides 11 and 12 of the main.

frame.

Thus it 'willbe seenthat the table 31 may i be raisedor lowered by the; hand lever 1 8 'in a relatively. rapid manner.

The table may also be actuated by neans of a pair of eccentrics 33, operating in the openings 25 of the arms 24, entirely inde pendent of the hand lever. V The eccentrics 33 are keyed secured to a shaft 34, mounted in bearings '35 on the sidewalls l1 and 12, and is provided with collars 36 to prevent end move- '10:)

ment ofthe shaft, whichhas rigidly secured at its center a worm wheel 37.

or otherwise I 1 V Enmeshed with the wheel 37 is a worm 38 fixed on the end of a spindle 39 mounted in the boss 14: and having on its outer end a hand wheel 40, by the operation of which may he raised or permitted to the table lower,

no r

Arranged above the machine'is a housing 41 positively rigid with respect to the machine, and mountedinthe housing is a shaft 4-2, carrying a roll .43betweenthe forks of the housing, this roll having an annular recess 44:, the bottoin of which is engraved I Apair of supports 46am raised froni the table 31, these supports being spaced slightly apart and having recesses in their upper edges, directly over the axis of the shaft 17 and pivot pin 31, the recesses being recepof the ends l? of an arbor 48 of'such diameter as to readily pass through a ring 4 9, to register with the groove 44; of the master rolled, p p r ,It will now be seen that upon lowering the table by the hand lever 18,'lll16 ringand arbor may be instantly removed and-a plain,

untreated ring substituted for one on which the rolling operation has been completed,

and it; is to'be noted that'th e pressure applied to the ring stretches and increases the diameter exactratio to its extent.

The pressureis thus varied in accordance with theresults to "be attained and calibrated by ineians of alregister "50, thestem 5.101. which is actuated by a bar 52, rigidly fixed in the table flange'to extend through an elongatedv opening 53 in the frame side 12, the register being supported by an arm ,54 fiized firmly to the same side frame.

Thus, a ring blank having been placed on the arbor, the tab'leis raised so that the time engages in the master roll and to a point shown on the indicator as correct for disclosed in the preferred form of its emon "ems-V.

bodirnent, but it is not desired to restrict the detalls to the exact construction shown, it being obvious that changes, not involving the exercise of invention,1na be made withister with said arbor, a link and lever device for raising the table, an eccentric on which the lever is tulcrun'1ed,'a single hand lever to adjust the eccentric, and means'for calibrating the pressure exerted on a ring disposed onsaid arbor. v

2. A ring rolling machine comprising a tired frame, a table adjustable therein, said table having a pair of recessed brackets on its" top, a ring arbor 'removably engageablc in the recesses of the brackets, a master roll rotatably supported above the table in register with said arbor, a link and lever device for raising the table; an eccentric 0-pe'rable in openings in said lever, a worm and gear device to rotate the eccentric, and a liand wheel whereby the link pivots may be alined with thetulcruni of said lever.

23. A ring rolling machine comprising a fixed frame, a table djustable vertically therein, said table havi ga pair of recessed brackets on its top, a ring arbor rcmovably engageable in the recesses of the brackets, a master roll rotatably supported above the table in register with said arbor, a link and lover device i'or raising the table, an eccentric on which the lever is-t'ulcrumed, a hand lever to adjust the eccentric, an eccentric operable in an opening of said lever, and hand operated means to actuate the last named eccentric whereby the lever may be turned upon its pivot.

This specification signed December, 1924.

up otn roar) w. ALLSOPP.

this 18th day of 

